JP5357630B2 - Photorefractive daylighting plate - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light refraction type lighting plate configured such that the thickness of lens is reduced and light transmitted from lens elements has uniform brightness. <P>SOLUTION: The two types of lens elements, each of which is formed from part of a curved lens and which are different from each other in shape, are arranged side by side, thereby forming a first light refracting section and a second light refracting section. In addition, both the lens elements are formed so as to be different from each other in the inclination of the lens faces relative to a horizontal surface. The different inclinations of the lens faces of the lens elements make light transmitted through the first refracting section and light transmitted through the second refracting section less likely to overlap each other. This arrangement suppresses the occurrence of areas illuminated comparatively brightly, thereby making the brightness of emitted light more uniform. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

The present invention is mainly applied to elevated structures such as highways and high-speed railways along the both sides of the roads and railways, and the light refraction for irradiating sunlight on the shaded areas by these elevated structures. It relates to a mold lighting plate.

2. Description of the Related Art Conventionally, various inventions have been disclosed for light-transmitting plates that are installed along both sides of roads and railways mainly for elevated buildings such as highways and high-speed railways to provide sound insulation.

For example, in Patent Document 1, a light refracting portion and a see-through portion are alternately provided in the vertical direction on the surface of a plate made of a transparent material, and the light refracting portion is formed using a lens element made of a part of a curved lens. The applicant has proposed a see-through light refraction type daylighting plate characterized in that the see-through portion is formed of the flat surface itself of the plate material.

JP-A-6-51106

Patent Document 1 describes a transparent light refraction type daylighting plate in which lens elements having different sizes are provided side by side. However, the transparent light refraction type daylighting plate described in Patent Document 1 increases the thickness of the lens when it is intended to irradiate the transmitted light from the lens element over a wide range, and two or more types of lenses are provided to increase the thickness of the lens. There is a problem that the brightness of the transmitted light from each lens element tends to be non-uniform when trying to make it smaller.
The present invention improves this and improves the uniformity of the brightness of the transmitted light of the daylighting plate.

In order to achieve the above object, the present invention is configured as follows.
That is, the light refraction type daylighting plate according to the present invention is installed along both sides of an elevated structure such as a highway or a high-speed railway, and the sun is placed in a shaded area by these elevated structures. A light refraction type daylighting plate for shining light. A plurality of lens elements made of a curved lens are arranged in parallel on the surface of a plate made of a transparent material to form a light refracting portion. A light ray can be secured, and at least the light refracting portion includes a first light refracting portion and a second light refracting portion formed by two types of lens elements having different shapes, respectively, and both the lens elements are in a horizontal plane. The lens surfaces are formed to have different inclinations , and the second light refracting portion refracts transmitted light at a larger angle than the first light refracting portion, and the second light refracting portion. Is the area It is characterized by being made smaller than the serial area of the first light-refracting portion.

According to the light refraction type lighting plate according to the present invention, the light refraction part includes a first light refraction part and a second light refraction part respectively formed by two types of lens elements having different shapes, Since both lens elements are formed so that the inclination of the lens surface with respect to the horizontal plane is different, the first refracting portion and the second refracting portion refract the transmitted light at different angles, and efficiently transmit the transmitted light over a wide range. Can be applied to the shaded area.
In addition, since both lens elements constituting the first light refracting part and the second light refracting part are formed with different inclinations of the lens surface with respect to the horizontal plane, the transmitted light of the first refracting part and the second light refracting part are different from each other. The transmitted light from the refracting portion is less likely to overlap, the occurrence of a brighter irradiated place is suppressed, and the brightness of the transmitted transmitted light is made more uniform.
In addition, since the first light refracting portion and the second light refracting portion are formed by two types of lens elements having different shapes, the angle range of each lens of both the lens elements can be reduced. The thickness of both lens elements can be reduced.

In addition, the second light refracting portion is formed to refract transmitted light at a larger angle than the first light refracting portion, and the area of the second light refracting portion is the same as that of the first light refracting portion. Since the area is smaller than the area , the transmitted light from the second light refracting part that is refracted at a larger angle than the transmitted light from the first light refracting part and is irradiated brighter to the ground surface is reduced, and the first The difference in brightness between the transmitted light from the light refracting portion and the transmitted light from the second light refracting portion can be reduced .

Further, a see-through part formed from the flat surface itself of the plate material is provided in parallel with the light refraction part, and the area of the see-through part is larger than the area of the first refraction part and the area of the second refraction part. If it is made smaller, the transmitted light from the see-through part that is irradiated brighter than the two refraction parts that are transmitted so as to be diffused by the lens element is reduced, and the transmitted light from both the light refraction parts and the transmitted light from the see-through part are reduced. It is preferable that the difference in brightness can be made small.

According to the light refraction type lighting plate according to the present invention, the transmitted light can be refracted to irradiate a wide range, and the irradiated light can be made more uniform.

It is a figure which shows one Embodiment of the light refraction type lighting plate which concerns on this invention, (A) is a side view, (B) is a front view. It is an enlarged view of FIG. 1 (a) which shows a light refraction part. It is a figure which shows the structure of the lens element using a curved surface lens. It is a figure which shows refraction of the light which permeate | transmits the lens element L of FIG. It is a figure which shows one Embodiment of the sound insulation wall using the light refraction type lighting plate of FIG. It is a figure which shows the usage condition of the sound insulation wall of FIG.

In the drawings, reference numeral 1 denotes a light refraction type daylighting plate.
The light refraction type lighting plate 1 is formed by extruding a transparent polycarbonate resin.
The material of the light refraction type lighting plate 1 may be any material as long as it is transparent, and a transparent synthetic resin such as acrylic resin or polyester resin, glass, or the like can be suitably used.

Reference numeral 2 denotes a light refracting portion provided on one side of the light refraction type lighting plate 1.
The light refracting portion 2 is refracted when sunlight passes through and changes its direction, and is formed by continuously arranging a large number of lens elements L using a part of a curved lens in the vertical direction. Has been.
The lens element L is formed in a rod-like lens shape whose cross-sectional shape does not change in the longitudinal direction.

Reference numeral 3 denotes a see-through portion provided on the light refraction type lighting plate 1.
The see-through portion 3 is formed flat so as not to change its direction when sunlight passes therethrough.
In the light refraction-type lighting plate 1, the light refraction portions 2 and the see-through portions 3 are alternately provided in the vertical direction, and the visibility through the light refraction-type light collecting plate 1 obstructed by the light refraction portions 2 is improved. 3 is improved.

FIG. 3 is a diagram showing the configuration of the lens element L using the shape of a curved lens.
In the curved lens shown in FIG. 3, the lens surface is formed into a circular concave curved cross section, and the lens element L has a curved surface shape of the lens surface from the minimum deflection angle θ1 to the maximum deflection angle θ2 of the curved lens. Is formed.
The deflection angle is an angle formed by the normal of the lens surface of the curved lens and the lens axis in the vertical direction.
FIG. 3 shows the lens elements L1 and L2 having different deflection angles. By forming the lens elements L1 and L2 on the same light refraction type lighting plate 1, the inclination of the lens surfaces of the lens elements L1 and L2 is as follows. These are provided differently with respect to the horizontal plane, and refract the incident solar rays and transmit them at different angles.

FIG. 4 is a diagram illustrating refraction of light transmitted through the lens element L of FIG.
In FIG. 4, the light refracting daylighting plate 1 is erected in the vertical direction with the lens element L directed to the right, and represents a situation in which sunlight rays from the upper right direction are transmitted in the lower left direction. The solar light incident from the upper right direction is provided to be refracted further downward.
In FIG. 4, N, N 1, and N 2 represent the incident light of solar rays incident on the light refraction type lighting plate 1, respectively, and T, T 1, and T 2 indicate that the incident light N to N 2 is the light refraction type lighting plate 1. Each of the transmitted light after passing through is shown.

The incident light N incident on the fluoroscopic part 3 is transmitted as transmitted light T without changing its direction even after passing through the light refraction type lighting plate 1.
Incident light N1 that has entered the position of the minimum deflection angle θ1 of the lens element L of the light refracting unit 2 is refracted so as to be directed downward when passing through the light refraction type lighting plate 1, and is transmitted as transmitted light T1. .
Incident light N2 that has entered the position of the maximum deflection angle θ2 of the lens element L of the light refracting unit 2 is refracted so as to be in a downward direction when passing through the light refraction type lighting plate 1, and further than the transmitted light T1. It is transmitted as downward transmitted light T2.
As described above, as the light incident on the lens element L having a large deflection angle, the angle at which the transmitted light is refracted downward is increased, and in this embodiment, the transmitted light is refracted downward. Has been.

Referring back to FIG. 2, the light refraction part 2 provided on the light refraction type lighting plate 1 according to the present invention includes a light refraction part 21 composed of the lens element L1, and a lens element having a shape different from the lens element L1. The light refraction part 22 comprised from L2 is provided. The lens elements L1 and L2 are formed so that the minimum deflection angle θ1 and the maximum deflection angle θ2 with respect to the horizontal plane are different from each other. Specifically, the transmitted light transmitted through the lens element L2 is directed downward from the transmitted light of the lens element L1. It is formed so as to be refracted.

More specifically, the lens element L1 is formed to have a minimum deflection angle θ1 and a maximum deflection angle θ2, and the lens element L2 is formed to have a minimum deflection angle θ1 ′ and a maximum deflection angle θ2 ′, and the maximum of the lens element L1. The deflection angle θ2 is formed to be equal to or smaller than the minimum deflection angle θ1 ′ of the lens element L2. For this reason, both lens elements L1 and L2 have different inclinations of the lens surface with respect to the horizontal plane.

Since the lens elements L1 and L2 have different lens surface inclinations, the sunlight rays incident on both lens elements are transmitted as transmitted light refracted at different angles, so that the transmitted light is irradiated in a wider range. be able to. Further, the lens element may be formed so that the inclination of the lens surface with respect to the horizontal plane partially overlaps with the lens elements L1 and L2, but the transmitted light of sunlight incident on the overlapping range of the inclination of the lens element L1 Since it is irradiated in a state where it overlaps the transmitted light of sunlight incident on the overlapping range of the inclination of the element L2, the irradiated part becomes brighter and non-uniform than the other, so both lens elements It is preferable to form the lens surfaces of L1 and L2 with different inclinations.

In both the lens elements L1 and L2, there is no problem even if the deflection angle, which is the angle between the lens axis and the normal of the lens surface, partially overlaps, but preferably the overlapping tilt range is smaller. Good. More preferably, since the shaded area is not irradiated with the transmitted light that is transmitted through both lens elements, the deflection angles of both lens elements L1 and L2 are set to θ1 <θ2 <θ1 ′ <θ2 ′ or , Θ1 <θ2 = θ1 ′ <θ2 ′, and the lens surfaces of both lens elements L1 and L2 may have different inclinations.

In addition, since the first light refracting portion and the second light refracting portion are respectively formed by two types of lens elements having different inclinations of the lens surface with respect to the horizontal plane, the light refracting portion formed by one lens element Compared to the case of irradiating transmitted light refracted in the same range, the thickness of each lens element L1, L2 can be made smaller, so that the thickness of the light refraction type lighting plate 1 can be further increased. It can be formed small.

FIG. 5 is a view showing an embodiment of a sound insulation wall using the light refraction type daylighting plate of FIG.
Reference numeral 4 denotes a frame, which is formed by appropriately combining hollow elongated bodies so as to conform to the shape of the light refraction type lighting plate 1. In the present embodiment, an opening is provided on the inner peripheral surface of the frame 4 having a rectangular cross section, and the light refraction type lighting plate 1 is fitted into the opening, but the shape of the frame 4 is limited to this. The cross section may be circular or polygonal. An aluminum alloy is preferably used as the material of the frame body 4 because of its mechanical strength, formability, and good workability, but other metals, synthetic resins, and the like may be used. The light refracting daylighting plate 1 is fitted and fixed to the frame body 4 to form a sound insulating wall 5.

FIG. 6 is a diagram showing one usage mode of the sound insulation wall 5 of FIG. 5, and shows a situation where the sound insulation wall 5 is erected on the upper part of the elevated structure 3 and sunlight incident from the upper right is transmitted in the lower left direction. Yes.
More specifically, the sound insulation wall 5 using the light refraction type lighting plate 1 formed at the vertical height X (m) is erected vertically on the elevated structure 3 having the height Y (m). .
The light refraction type lighting plate 1 used for the sound insulation wall 5 includes a first light refraction part 21, a second light refraction part 22, and a see-through part 3 as shown in FIG. These are formed at X1, X2, and X3, respectively. X1: X2: the ratio of X3, namely the first refractive section 21 in the noise-insulating wall 5, a second light-refracting portion 22, which is the ratio of the area of the transparent portion 3.
The first light refracting portion 21 and the second light refracting portion 22 are formed by forming lens elements L1 and L2 constituting each into a curved surface having a circumferential shape as shown in FIG. The element L1 is formed to have a minimum deflection angle θ1 and a maximum deflection angle θ2, the lens element L2 is formed to have a minimum deflection angle θ1 ′ and a maximum deflection angle θ2 ′, and the maximum deflection angle θ2 of the lens element L1 is the lens element L2. Is formed so as to be smaller than the minimum deflection angle θ1 ′.
Sunlight enters the light refraction type daylighting plate 1 from an angle of H (degrees) with respect to the horizontal plane, and the lens element L1 constituting the first light refraction part 21 and the lens element constituting the second light refraction part 22. The transmitted light respectively transmitted through L2 and the see-through portion 3 irradiates the range of Z1, Z2, and Z3 on the ground surface.

The above-described various dimensions in the present embodiment will be described in more detail. The light-refractive-type daylighting plate 1 is formed to have a vertical height X = 4 (m), and an elevated structure with a height Y = 36.3 (m). Stands vertically on the object 3.
The lens elements L1 and L2 have respective lens surfaces formed at θ1 = 5 degrees, θ2 = 15 degrees, θ1 ′ = 25 degrees, and θ2 ′ = 35 degrees.
When sunlight enters the sound insulating wall 5 formed and installed as described above from an angle of H (degrees) with respect to the horizontal plane, the irradiation range in which the transmitted light illuminates the ground surface is Z1 = 18.1 ( m), Z2 = 12.0 (m), and Z3 = 6.5 (m). The numerical value indicating the irradiation range of Z1 to Z3 is represented by the length of the distance from the nearest position to the farthest position from the sound insulating wall 5 in each of the irradiation ranges of Z1 to Z3.

As described above, the lens elements L1 and L2 constituting the light refraction type lighting plate 1 are formed so that the difference between the maximum deflection angle and the minimum deflection angle of each lens surface is equal to 10 degrees. The irradiation range is smaller for Z2 irradiated by the second light refracting section 22 formed by the lens element L2 that refracts incident light more downward and irradiates near the installation place of the sound insulating wall 5. This is because the transmitted light transmitted through both lens elements L1 and L2 has substantially the same spread angle when transmitted from the light refraction type lighting plate 1, but Z2 irradiated by refracting the transmitted light downward is irradiated more. The distance from the sound insulation wall 5 is reduced, which is a major factor for narrowing the irradiation range. Further, the angle at which the transmitted light transmitted through the lens elements L1 and L2 spreads is slightly smaller for the transmitted light of the lens element L2, but the factor that makes the range of Z2 smaller than Z1 is compared with the above factor. The effect is thought to be small.

Regarding the brightness of the transmitted light of the sound insulating wall 5, the transmitted light of the first and second light refracting parts is refracted so as to spread by the lens elements L1 and L2, so that the brightness is darker than the transmitted light of the see-through part 3. It is made. When the areas of the first light refraction part 21, the second light refraction part 22, and the see-through part 3 formed on the sound insulation wall 5 are equal, the brightness of each of Z1 to Z3 irradiated to the transmitted light from the sound insulation wall 5 Is inversely proportional to the size in the range of Z1 to Z3 and becomes (1 / 18.1) :( 1/12) :( 1 / 6.5), and Z1 is illuminated the darkest. However, the sound insulation wall 5 of the present embodiment is formed such that the ratio of the areas of the first light refracting portion 21, the second light refracting portion 22, and the see-through portion 3 is X1: X2: X3 = 3: 2: 1. Then, the amount of light transmitted through both the light refracting portions 21 and 22 and the see-through portion 3 is adjusted so that the brightness of each of Z1 to Z3 is (3 / 18.1) :( 2/12) :( 1 / 6.5), the difference in brightness between Z1 and Z3 is made smaller.

As described above, the second light refracting portion 22 is formed to refract the transmitted light at an angle larger than that of the first light refracting portion 21, and the area X2 of the second light refracting portion 22 is the first The difference in brightness between Z1 and Z2 that is formed smaller than the area X1 of the light refracting portion 21 and irradiated with the transmitted light from the first light refracting portion 21 and the transmitted light from the second light refracting portion 22. Can be made small.
Further, the area X3 of the fluoroscopic part 3 is formed to be smaller than the area X1 of the first refracting part 21 and the area X2 of the second refracting part 22, and the transmitted light from the fluoroscopic part 3 is adjusted. The difference in brightness between Z1 and Z2 irradiated with the transmitted light from the light refracting units 21 and 22 and Z3 irradiated with the transmitted light from the fluoroscopic unit 3 can be reduced.

In Z1 and Z2, the position farthest away from the sound insulating wall 5 is irradiated by the transmitted light transmitted from the lens elements L1 and L2 provided at the uppermost position of the light refraction-type lighting plate 1, respectively. The position closest to the sound insulation wall 5 is irradiated by the transmitted light transmitted from the lens elements L1 and L2 provided on the lowermost side.
Similarly, in Z3, the transmitted light transmitted from the see-through portion 3 provided at the uppermost and lower sides of the sound insulating wall 5 is irradiated at the position farthest from the sound insulating wall 5 and the closest position, respectively. For this reason, if the lens elements L1 and L2 and the see-through portion 3 are provided so as to be uniformly distributed over the entire light refraction type lighting plate 1, Z1 to Z3 are transmitted through a wider and more uniform brightness respectively. Light can be irradiated, which is preferable.
In the present embodiment, the first light refracting portion 21 and the second light refracting portion 22 are provided by forming a plurality of lens elements L1 and L2 side by side, but the present invention is not limited to this. Even if the lens elements L1 and L2 are arranged alternately, the first light refraction part 21 and the second light refraction part 22 may be integrally formed.

DESCRIPTION OF SYMBOLS 1 Light refraction type lighting board 2 Light refracting part 21 First light refracting part 22 Second light refracting part 3 Perspective part 4 Frame body 5 Sound insulation wall

Claims (2)

It is a light refraction type lighting plate that is installed along the both sides of an elevated structure such as an expressway and a high-speed railway, and sheds sunlight on the shaded area by these elevated structures. In addition, a plurality of lens elements consisting of a part of a curved lens are juxtaposed on the surface of a plate material made of a transparent material to form a light refracting portion, so that sunlight for the shaded area can be secured, and at least the light refracting portion is shaped. The first light refracting portion and the second light refracting portion are formed by two different lens elements, respectively, and both the lens elements are formed so that the inclination of the lens surface with respect to the horizontal plane is different from each other. And
The second light refracting part is configured to refract transmitted light at a larger angle than the first light refracting part, and the area of the second light refracting part is larger than the area of the first light refracting part. A light refraction type daylighting plate characterized by being made small . A see-through portion formed from the flat surface itself of the plate material is provided in parallel with the light refraction portion, and the area of the see-through portion is smaller than the areas of the first refraction portion and the second refraction portion. The light refraction type lighting plate according to claim 1, which is made.

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